Input Edit + Keyboard Animation

packages/frontend/apps/ios/App/App/Packages/Intelligents/Sources/Intelligents/IntelligentsChatController/IntelligentsChatController+Keyboard.swift

@@ -0,0 +1,43 @@
+//
+//  IntelligentsChatController+Keyboard.swift
+//  Intelligents
+//
+//  Created by 秋星桥 on 2024/12/6.
+//
+
+import UIKit
+
+extension IntelligentsChatController {
+  @objc func keyboardWillAppear(_ notification: Notification) {
+    let info = notification.userInfo ?? [:]
+    let keyboardHeight = (info[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?
+      .cgRectValue
+      .height ?? 0
+    inputBoxKeyboardAdapterHeightConstraint.constant = keyboardHeight
+    view.setNeedsUpdateConstraints()
+    animateWithKeyboard(userInfo: info)
+  }
+
+  @objc func keyboardWillDisappear(_ notification: Notification) {
+    let info = notification.userInfo ?? [:]
+    inputBoxKeyboardAdapterHeightConstraint.constant = 0
+    view.setNeedsUpdateConstraints()
+    animateWithKeyboard(userInfo: info)
+  }
+
+  private func animateWithKeyboard(userInfo info: [AnyHashable: Any]) {
+    let keyboardAnimationDuration = (info[UIResponder.keyboardAnimationDurationUserInfoKey] as? NSNumber)?
+      .doubleValue ?? 0
+    let keyboardAnimationCurve = (info[UIResponder.keyboardAnimationCurveUserInfoKey] as? NSNumber)?
+      .uintValue ?? 0
+    UIView.animate(
+      withDuration: keyboardAnimationDuration,
+      delay: 0,
+      options: UIView.AnimationOptions(rawValue: keyboardAnimationCurve),
+      animations: {
+        self.view.layoutIfNeeded()
+      },
+      completion: nil
+    )
+  }
+}

packages/frontend/apps/ios/App/App/Packages/Intelligents/Sources/Intelligents/IntelligentsChatController/IntelligentsChatController.swift

@@ -9,9 +9,12 @@ import UIKit
 
 public class IntelligentsChatController: UIViewController {
   let header = Header()
+  let inputBoxKeyboardAdapter = UIView()
   let inputBox = InputBox()
   let tableView = ChatTableView()
 
+  var inputBoxKeyboardAdapterHeightConstraint = NSLayoutConstraint()
+
   override public var title: String? {
     set {
       super.title = newValue
@@ -25,6 +28,19 @@ public class IntelligentsChatController: UIViewController {
   public init() {
     super.init(nibName: nil, bundle: nil)
     title = "Chat with AI".localized()
+
+    NotificationCenter.default.addObserver(
+      self,
+      selector: #selector(keyboardWillDisappear),
+      name: UIResponder.keyboardWillHideNotification,
+      object: nil
+    )
+    NotificationCenter.default.addObserver(
+      self,
+      selector: #selector(keyboardWillAppear),
+      name: UIResponder.keyboardWillShowNotification,
+      object: nil
+    )
   }
 
   @available(*, unavailable)
@@ -32,6 +48,10 @@ public class IntelligentsChatController: UIViewController {
     fatalError()
   }
 
+  deinit {
+    NotificationCenter.default.removeObserver(self)
+  }
+
   override public func viewDidLoad() {
     super.viewDidLoad()
     assert(navigationController != nil)
@@ -51,12 +71,23 @@ public class IntelligentsChatController: UIViewController {
       header.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: 44),
     ].forEach { $0.isActive = true }
 
+    view.addSubview(inputBoxKeyboardAdapter)
+    inputBoxKeyboardAdapter.translatesAutoresizingMaskIntoConstraints = false
+    [
+      inputBoxKeyboardAdapter.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+      inputBoxKeyboardAdapter.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+      inputBoxKeyboardAdapter.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor),
+    ].forEach { $0.isActive = true }
+    inputBoxKeyboardAdapterHeightConstraint = inputBoxKeyboardAdapter.heightAnchor.constraint(equalToConstant: 0)
+    inputBoxKeyboardAdapterHeightConstraint.isActive = true
+    inputBoxKeyboardAdapter.backgroundColor = inputBox.backgroundView.backgroundColor
+
     view.addSubview(inputBox)
     inputBox.translatesAutoresizingMaskIntoConstraints = false
     [
       inputBox.leadingAnchor.constraint(equalTo: view.leadingAnchor),
       inputBox.trailingAnchor.constraint(equalTo: view.trailingAnchor),
-      inputBox.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor),
+      inputBox.bottomAnchor.constraint(equalTo: inputBoxKeyboardAdapter.topAnchor),
     ].forEach { $0.isActive = true }
 
     view.addSubview(tableView)